Stories similar to Weird Alarm clock in notification bar after flashing jelly bean

Sorry for re posting, but Im new to the forum, so hi alll...I've only had my S3 for a week, it was running ICS 4.0.4 out of the box, but I updated it to jelly bean 4.1.1 (via Kies on my laptop) as soon as I got it. It was working fine but now my briefing alarm announcments don't match the clock time.